I have a 220g 100% planted tank and only run 4x 39w T5HO bulbs with 3- 150w HID Metal Halides. You need to take off some of that lighting. I only also run my lighting 6 hours for the Metal Halides and 8 hours for the T5HO's.
Also DIY CO2
isn't effective in a tank that size IMO
. You need to use pressurized CO2
with high light. Also what ferts are you using? You should be using dry ferts because the higher the light and CO2
the faster plants grow which means they need more ferts.
Here's some dry ferts info...
dry fert this $15 package is all you need and will last a couple years... http://greenleafaquariums.com/aquarium-fertilizers-supplements/micro-macro-fertilizers.html
You need 3 dosing bottles found at the bottom of this page... http://greenleafaquariums.com/aquarium-fertilizer.html
This is a good thread about dosing PPS-Pro. Only read the opening post not all the comments after it.... http://www.aquaticplantcentral.com/forumapc/pps-analysis-feedback/39491-newbie-guide-pps-pro.html
There are two things I do different from the article. First I use 3 dosing bottles as I split the macro nutrients for better custom dosing to the needs of the tank. Nitrates in one bottle, phosphates and potassium in one bottle, and micro's in the 3rd bottle. The other thing you'll notice the recipe calls for using MgSO4, magnesium sulfate, which you don't need if you have hard tap water with a Gh
of 4 or higher.